curl --request POST \
  --url https://api.example.com/api/billing-groups \
  --header 'Content-Type: application/json' \
  --data '
{
  "clientID": 123,
  "name": "<string>",
  "primaryContactID": 123,
  "address1": "<string>",
  "address2": "<string>",
  "address3": "<string>",
  "suburb": "<string>",
  "state": "<string>",
  "postcode": "<string>",
  "country": "<string>",
  "description": "<string>"
}
'

{
  "value": 123
}